Capture：该组件负责读取数据库日志，抽取增量。
Capture: This component is responsible for reading the database log and capturing the changes.
Apply：该组件负责使用由抽取组件获得的增量，然后写进目标数据库。
Apply: This component is responsible for applying the changes captured by the capture component and then writing the changes to a target database.
图1显示Capture使用cd表存储来自日志的抽取增量，Apply读取表，然后将增量写入目标表中。
Figure 1 shows capture using CD tables to store captured changes from the logs, Apply reading those tables, and then writing the changes to the target tables.
将数据的转换阶段单独分离出来，同时提供数据转换重用机制，将那些可以重用的规则保存下来以便于日常增量数据的定时抽取、转换及加载；
The data transform stage is separated, while provides data transform reuse mechanisms, who may save the rules and use its for extracting the daily incremental data, transform and loading;
将数据的转换阶段单独分离出来，同时提供数据转换重用机制，将那些可以重用的规则保存下来以便于日常增量数据的定时抽取、转换及加载；
The data transform stage is separated, while provides data transform reuse mechanisms, who may save the rules and use its for extracting the daily incremental data, transform and loading;
应用推荐